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Accounting Policies (Details) - USD ($)
$ in Millions
 12 Months Ended
Dec. 31, 2025
Dec. 31, 2024
Dec. 31, 2023
Dec. 31, 2022
Utility Revenue (Details) [Abstract]        
Operating Revenues $ 9,042 $ 8,462 $ 8,312  
Restricted Cash and Cash Equivalent [Abstract]        
Cash and cash equivalents 1,071 306    
Total Cash, Cash Equivalents and Restricted Cash 1,086 339 382 $ 357
Property, Plant and Equipment (Numeric) [Abstract]        
Interest costs, capitalized during the period $ 32 20 $ 12  
Discount Rate Change For United Kingdom Pension Plans Numeric [Abstract]        
Percentage in excess of gains and losses equal to the plan's projected benefit obligation to use accelerated amortization 30.00%      
Minimum percentage of gains and losses under the accelerated method that are amortized on a straight line basis 10.00%      
Maximum percentage of gains and losses under the accelerated that are amortized on a straight line basis 30.00%      
Income Taxes [Abstract]        
Minimum percentage to be attained of likelihood of uncertain tax position being realized 50.00%      
Fuel, Materials and Supplies (Details) [Abstract]        
Fuel, materials and supplies on the Balance Sheet $ 551 511    
Balance Sheet Classification of Deferred Taxes [Abstract]        
Goodwill 2,247 2,247    
Fuel [Member]        
Fuel, Materials and Supplies (Details) [Abstract]        
Fuel, materials and supplies on the Balance Sheet 157 153    
Natural Gas Stored Underground [Member]        
Fuel, Materials and Supplies (Details) [Abstract]        
Fuel, materials and supplies on the Balance Sheet 50 49    
Material And Supplies [Member]        
Fuel, Materials and Supplies (Details) [Abstract]        
Fuel, materials and supplies on the Balance Sheet $ 344 $ 309    
Regulated Operations [Member] | Utility Plant [Member]        
Depreciation (Details) [Abstract]        
Weighted-average rates 3.06% 3.20% 3.26%  
Allowance For Doubtful Accounts [Member]        
Allowance for Doubtful Accounts (Details) [Roll Forward]        
Balance at beginning of period $ 154 $ 130 $ 95  
Additions charged to income 84 109 87  
Deductions 98 85 52  
Balance at end of period 140 154 130  
PPL Electric Utilities Corp [Member]        
Utility Revenue (Details) [Abstract]        
Operating Revenues 3,113 2,876 3,008  
Restricted Cash and Cash Equivalent [Abstract]        
Cash and cash equivalents 30 24    
Total Cash, Cash Equivalents and Restricted Cash 30 24 51 25
Property, Plant and Equipment (Numeric) [Abstract]        
Interest costs, capitalized during the period 13 9 $ 7  
Income Taxes [Abstract]        
Intercompany tax receivables (payables) (27) (2)    
Fuel, Materials and Supplies (Details) [Abstract]        
Fuel, materials and supplies on the Balance Sheet 151 104    
PPL Electric Utilities Corp [Member] | Fuel [Member]        
Fuel, Materials and Supplies (Details) [Abstract]        
Fuel, materials and supplies on the Balance Sheet 0 0    
PPL Electric Utilities Corp [Member] | Natural Gas Stored Underground [Member]        
Fuel, Materials and Supplies (Details) [Abstract]        
Fuel, materials and supplies on the Balance Sheet 0 0    
PPL Electric Utilities Corp [Member] | Material And Supplies [Member]        
Fuel, Materials and Supplies (Details) [Abstract]        
Fuel, materials and supplies on the Balance Sheet $ 151 $ 104    
PPL Electric Utilities Corp [Member] | Regulated Operations [Member] | Utility Plant [Member]        
Depreciation (Details) [Abstract]        
Weighted-average rates 2.46% 2.52% 2.62%  
PPL Electric Utilities Corp [Member] | Allowance For Doubtful Accounts [Member]        
Allowance for Doubtful Accounts (Details) [Roll Forward]        
Balance at beginning of period $ 41 $ 50 $ 33  
Additions charged to income 33 56 52  
Deductions 35 65 35  
Balance at end of period 39 41 50  
Louisville Gas And Electric Co [Member]        
Utility Revenue (Details) [Abstract]        
Operating Revenues 1,748 1,648 1,613  
Restricted Cash and Cash Equivalent [Abstract]        
Cash and cash equivalents 162 8    
Total Cash, Cash Equivalents and Restricted Cash 169 24 44 93
Property, Plant and Equipment (Numeric) [Abstract]        
Interest costs, capitalized during the period 6 3 $ 1  
Income Taxes [Abstract]        
Intercompany tax receivables (payables) (7) (2)    
Fuel, Materials and Supplies (Details) [Abstract]        
Fuel, materials and supplies on the Balance Sheet 160 157    
Balance Sheet Classification of Deferred Taxes [Abstract]        
Goodwill 389 389    
Louisville Gas And Electric Co [Member] | Fuel [Member]        
Fuel, Materials and Supplies (Details) [Abstract]        
Fuel, materials and supplies on the Balance Sheet 58 64    
Louisville Gas And Electric Co [Member] | Natural Gas Stored Underground [Member]        
Fuel, Materials and Supplies (Details) [Abstract]        
Fuel, materials and supplies on the Balance Sheet 33 29    
Louisville Gas And Electric Co [Member] | Material And Supplies [Member]        
Fuel, Materials and Supplies (Details) [Abstract]        
Fuel, materials and supplies on the Balance Sheet $ 69 $ 64    
Louisville Gas And Electric Co [Member] | Regulated Operations [Member] | Utility Plant [Member]        
Depreciation (Details) [Abstract]        
Weighted-average rates 3.69% 4.02% 4.00%  
Louisville Gas And Electric Co [Member] | Allowance For Doubtful Accounts [Member]        
Allowance for Doubtful Accounts (Details) [Roll Forward]        
Balance at beginning of period $ 3 $ 6 $ 4  
Additions charged to income 4 4 4  
Deductions 2 7 2  
Balance at end of period 5 3 6  
Kentucky Utilities Co [Member]        
Utility Revenue (Details) [Abstract]        
Operating Revenues 2,064 1,964 1,884  
Restricted Cash and Cash Equivalent [Abstract]        
Cash and cash equivalents 10 13    
Total Cash, Cash Equivalents and Restricted Cash 17 29 38 $ 21
Property, Plant and Equipment (Numeric) [Abstract]        
Interest costs, capitalized during the period 8 4 $ 1  
Income Taxes [Abstract]        
Intercompany tax receivables (payables) (10) (5)    
Fuel, Materials and Supplies (Details) [Abstract]        
Fuel, materials and supplies on the Balance Sheet 183 173    
Balance Sheet Classification of Deferred Taxes [Abstract]        
Goodwill 607 607    
Kentucky Utilities Co [Member] | Fuel [Member]        
Fuel, Materials and Supplies (Details) [Abstract]        
Fuel, materials and supplies on the Balance Sheet 99 89    
Kentucky Utilities Co [Member] | Natural Gas Stored Underground [Member]        
Fuel, Materials and Supplies (Details) [Abstract]        
Fuel, materials and supplies on the Balance Sheet 0 0    
Kentucky Utilities Co [Member] | Material And Supplies [Member]        
Fuel, Materials and Supplies (Details) [Abstract]        
Fuel, materials and supplies on the Balance Sheet $ 84 $ 84    
Kentucky Utilities Co [Member] | Regulated Operations [Member] | Utility Plant [Member]        
Depreciation (Details) [Abstract]        
Weighted-average rates 3.68% 3.86% 3.95%  
Kentucky Utilities Co [Member] | Allowance For Doubtful Accounts [Member]        
Allowance for Doubtful Accounts (Details) [Roll Forward]        
Balance at beginning of period $ 2 $ 2 $ 3  
Additions charged to income 5 4 3  
Deductions 3 4 4  
Balance at end of period $ 4 $ 2 $ 2